Two spacewalking astronauts began preparing the International Space Station (ISS) for new solar arrays on Sunday (Feb. 28), battling tough bolts to kick off a major power upgrade for the orbiting lab.

Three upcoming spacewalks are part of a bigger plan to boost the aging space station’s power supply. Three upcoming spacewalks are part of a bigger plan to boost the aging space station’s power supply ...

A SpaceX Falcon 9 rocket thundered away from Florida Thursday and set off after the International Space Station carrying more than 7,000 pounds of supplies, science gear and other hardware, including ...

Astronauts aboard the International Space Station (ISS) have undertaken three spacewalks over a 10-day period in order to fit a new set of solar arrays to the exterior hull of the ageing spacecraft.

The power for Hubble’s scientific discoveries comes from solar cells. Designing and constructing Hubble’s first two sets of solar cell arrays constituted a huge technological achievement for the ...